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Machine translation
1. (WO1981003633) METHOD FOR MANUFACTURING TUBES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003633    International Application No.:    PCT/SE1981/000173
Publication Date: 24.12.1981 International Filing Date: 10.06.1981
IPC:
B22F 3/26 (2006.01)
Applicants:
Inventors:
Priority Data:
8004338 11.06.1980 SE
Title (EN) METHOD FOR MANUFACTURING TUBES
(FR) PROCEDE DE FABRICATION DE TUBES
Abstract: front page image
(EN)Method for manufacturing tubes by sintering and infiltration, the characteristic features of the invention being that the tube wall is formed from a metal powder on a mandrel and is sintered and that the tube wall, during one sintering stage, is sealed by infiltration by means of an infiltration material which solidifies in situ when the temperature is lowered after sintering and which is capable, when in the liquid state, of wetting the metal powder particles, the moulding of the tube from the metal powder being preferably carried out by a wet or dry pressing process or by extrusion of the metal powder.
(FR)Procede de fabrication de tubes par frittage et infiltration, les caracteristiques de l"invention etant que la paroi du tube est formee a partir d"une poudre metallique sur un mandrin puis frittee, et que la paroi du tube, pendant une etape de frittage, est bouchee par infiltration a l"aide d"un materiau d"infiltration qui se solidifie in situ lorsque la temperature est abaissee apres frittage et qui est capable, lorsqu"il se trouve a l"etat liquide de mouiller les particules de poudre metalliques, le moulage du tube a partir d"une poudre metallique s"effectuant de preference par un procede de compression par voie seche ou humide ou par extrusion de la poudre metallique.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)